Gearhart, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 7.2 °C (low) to 14.7 °C (high). Annual precipitation averages 1971.8 Millimeters. Gearhart is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.9 °C | 9.8 °C | 284.23 mm |
| February | 3.6 °C | 10.7 °C | 219.71 mm |
| March | 4.4 °C | 12 °C | 224.03 mm |
| April | 5.3 °C | 13.7 °C | 172.72 mm |
| May | 8 °C | 15.7 °C | 97.03 mm |
| June | 9.8 °C | 17.4 °C | 70.36 mm |
| July | 11.9 °C | 19.4 °C | 23.62 mm |
| August | 11.8 °C | 20 °C | 33.78 mm |
| September | 10.7 °C | 19.7 °C | 70.61 mm |
| October | 7.9 °C | 16.3 °C | 177.04 mm |
| November | 5.8 °C | 12.2 °C | 294.39 mm |
| December | 3.5 °C | 9.7 °C | 304.29 mm |
| Annual | 7.2 °C | 14.7 °C | 1971.81 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |